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Zimbra, a Yahoo! company, is the leader in open source, next-generation messaging and collaboration software. We built Zimbra Collaboration Suite (ZCS) with the belief existing email and calendaring solutions are broken- the result is an innovative experience for end-users and system administrators.
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OpenOffice.org 2 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.
http://openoffice.org/
Magento is the flexible, feature-rich and secure eCommerce solution business owners need to propel their online business
Magento is open source software built by Varien, an industry leader and eCommerce provider for over 6 years. The software includes cutting-edge features such as single-page checkout, ship-to-multiple-addresses and a wealth of other high-end components that will improve conversions and elevate online businesses.
http://www.magentocommerce.com/
